Average weather for the Greek Isles in September
It's warm in September in the Greek Isles with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 30°C. At night, you can expect temperatures between 19°C and 23°C.
Start of September
The month of September starts in Greek Isles with hot temps, averaging around 30°C during the day and nights around 23°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
Mid September
By mid-September, daytime temps drop to around 29°C, with nights around 22°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Greek Isles is around 27°C, while nighttime temps are about 20°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Because temperatures drop in the evening, wearing layers is recommended.
Water temperature
The water temperature at the Greek Isles is 27°C this month. Nice and warm for a swim.
In September, there is an average of 15 mm of precipitation, spread over 3 days. The wind speed is around 4 Bft, mostly coming from the West.
Greek Isles in September |
New York | ||
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28°C | 27°C | |
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30°C | 31°C | |
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26°C | -5°C | |
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15 mm | 57 mm | |
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3 days | 9 days |
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit the Greek Isles?
Looking for great weather? September is a good time to be in the Greek Isles. The temperatures are nice, and there’s little chance of rain this month.
Temperature records
With 36°C in 2015, the Greek Isles reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 21°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 14°C to a highest value of 26°C.
Check out the climate of the Greek Isles for all months and discover the best travel time
The climate in the Greek Isles is based on weather data from Crete. Other spots might have different weather.
Daily Temperature in September in the Greek Isles
This chart shows the average daily high and low temperatures in September for the Greek Isles, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in the Greek Isles
The chart below shows the average daily precipitation in September for the Greek Isles, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 3 days of precipitation in the Greek Isles.
Daily UV index in September in the Greek Isles
This chart shows the average daily UV index in September in the Greek Isles, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in the Greek Isles over the years
This chart shows the average temperature in September in the Greek Isles, measured in degrees Celsius, over the past few years.
Total precipitation in September in the Greek Isles over the years
This chart shows the average precipitation in September in the Greek Isles, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for the Greek Isles
Click on any day in September to get detailed info about the usual weather on that day in the Greek Isles. Check out the historical temperatures and precipitation over the past 10 years on this day.






























Weather experiences in September in the Greek Isles
Have you been to the Greek Isles in September?
Share your weather experience in September in the Greek Isles.
Average weather in the Greek Isles by month
Click on a month below to see detailed weather info for the Greek Isles. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of the Greek Isles for all months at once